--- title: "ČSN steel grades — 647 designations — Page 2" description: "Steel grades designated under ČSN, with chemical composition, mechanical properties and equivalents in other standards. 647 designations across 451…" canonical: https://steelequivalents.com/materials/csn/page/2 language: en robots: index, follow og_type: website type: material-standard language_alternates: en: https://steelequivalents.com/materials/csn/page/2.md cs: https://steelequivalents.com/cs/materiály/csn.md de: https://steelequivalents.com/de/werkstoffe/csn.md es: https://steelequivalents.com/es/materiales/csn.md fr: https://steelequivalents.com/fr/matériaux/csn.md hu: https://steelequivalents.com/hu/anyagok/csn.md it: https://steelequivalents.com/it/materiali/csn.md nl: https://steelequivalents.com/nl/materialen/csn.md pl: https://steelequivalents.com/pl/materiały/csn.md pt: https://steelequivalents.com/pt/materiais/csn.md ru: https://steelequivalents.com/ru/материалы/csn.md tr: https://steelequivalents.com/tr/malzemeler/csn.md zh: https://steelequivalents.com/zh/材料/csn.md ja: https://steelequivalents.com/ja/材料/csn.md ar: https://steelequivalents.com/ar/المواد/csn.md ko: https://steelequivalents.com/ko/재료/csn.md pt-br: https://steelequivalents.com/pt-br/materiais/csn.md hi: https://steelequivalents.com/hi/सामग्री/csn.md content_hash: sha256:ada0ae910d618a478e5615c6d38d1f7358b5e45d32b6b9dafe2aa4de5ddd0e5a generated: 2026-09-22 --- > **Machine-readable Markdown rendering.** This is a Markdown representation of a web page, > served for AI agents and crawlers as a token-efficient alternative to the full HTML. > Full interactive HTML version: https://steelequivalents.com/materials/csn/page/2 > Canonical URL: https://steelequivalents.com/materials/csn/page/2 > Available languages: en, cs, de, es, fr, hu, it, nl, pl, pt, ru, tr, zh, ja, ar, ko, pt-br, hi > Change detection: `content_hash` is the SHA-256 of this document's Markdown body — everything > below this block, whitespace-trimmed, excluding the front-matter. Compare it to detect a real > content change; `generated` moves on every render and is not a change signal. ČSN · 647 grades # ČSN steel grades — 647 designations — Page 2 Every grade designated under ČSN, with the material number it maps to, what kind of steel it is, its carbon window and how many other standards carry it. Open a grade for its full composition, properties and its designations in other standards. Every name on this page is an indicative cross-reference, not an asserted identity: the grades are close, not interchangeable. Check the composition before you substitute. ## Also known as 647 designations | Grade | Material no. | Category | C% by weight | Also in other standards | |---|---|---|---|---| | [11330](/materials/csn/11330 "11330") | [1.0335](/materials/material-no/1.0335 "1.0335") | Unalloyed structural steels | ≤ 0.08 | 12 | | [11331](/materials/csn/11331 "11331") | [1.0332](/materials/material-no/1.0332 "1.0332") | Unalloyed structural steels | ≤ 0.12 | 16 | | [11331](/materials/csn/11331 "11331") | [1.0330](/materials/material-no/1.0330 "1.0330") | Unalloyed structural steels | ≤ 0.12 | 17 | | [11342](/materials/csn/11342 "11342") | [1.0034](/materials/material-no/1.0034 "1.0034") | Unalloyed structural steels | ≤ 0.15 | 12 | | [11342](/materials/csn/11342 "11342") | [1.0038](/materials/material-no/1.0038 "1.0038") | Unalloyed structural steels | ≤ 0.17 | 26 | | [11343](/materials/csn/11343 "11343") | [1.0028](/materials/material-no/1.0028 "1.0028") | Unalloyed structural steels | ≤ 0.15 | 18 | | [11343](/materials/csn/11343 "11343") | [1.0036](/materials/material-no/1.0036 "1.0036") | Unalloyed structural steels | ≤ 0.17 | 20 | | [11343](/materials/csn/11343 "11343") | [1.0036](/materials/material-no/1.0036 "1.0036") | Unalloyed structural steels | ≤ 0.17 | 19 | | [11343](/materials/csn/11343 "11343") | [1.0026](/materials/material-no/1.0026 "1.0026") | Unalloyed structural steels | ≤ 0.2 | 2 | | [11343](/materials/csn/11343 "11343") | [1.0035](/materials/material-no/1.0035 "1.0035") | Unalloyed structural steels | — | 22 | | [11353](/materials/csn/11353 "11353") | [1.0308](/materials/material-no/1.0308 "1.0308") | Unalloyed structural steels | ≤ 0.17 | 10 | | [11353](/materials/csn/11353 "11353") | [1.0254](/materials/material-no/1.0254 "1.0254") | Unalloyed structural steels | ≤ 0.16 | 6 | | [11353](/materials/csn/11353 "11353") | [1.0301](/materials/material-no/1.0301 "1.0301") | Case hardening steels | 0.07–0.13 | 20 | | [11364](/materials/csn/11364 "11364") | [1.0345](/materials/material-no/1.0345 "1.0345") | Heat-resistant structural steels | ≤ 0.16 | 18 | | [11364](/materials/csn/11364 "11364") | [1.0346](/materials/material-no/1.0346 "1.0346") | Unalloyed structural steels | ≤ 0.07 | 2 | | [11366](/materials/csn/11366 "11366") | [1.0345](/materials/material-no/1.0345 "1.0345") | Heat-resistant structural steels | ≤ 0.16 | 18 | | [11368](/materials/csn/11368 "11368") | [1.0345](/materials/material-no/1.0345 "1.0345") | Heat-resistant structural steels | ≤ 0.16 | 18 | | [11368](/materials/csn/11368 "11368") | [1.0346](/materials/material-no/1.0346 "1.0346") | Unalloyed structural steels | ≤ 0.07 | 2 | | [11368](/materials/csn/11368 "11368") | [1.8945](/materials/material-no/1.8945 "1.8945") | Weathering steels | ≤ 0.12 | 16 | | [11369](/materials/csn/11369 "11369") | [1.0346](/materials/material-no/1.0346 "1.0346") | Unalloyed structural steels | ≤ 0.07 | 2 | | [11369](/materials/csn/11369 "11369") | [1.8945](/materials/material-no/1.8945 "1.8945") | Weathering steels | ≤ 0.12 | 16 | | [11373](/materials/csn/11373 "11373") | [1.0028](/materials/material-no/1.0028 "1.0028") | Unalloyed structural steels | ≤ 0.15 | 18 | | [11373](/materials/csn/11373 "11373") | [1.0036](/materials/material-no/1.0036 "1.0036") | Unalloyed structural steels | ≤ 0.17 | 20 | | [11373](/materials/csn/11373 "11373") | [1.0036](/materials/material-no/1.0036 "1.0036") | Unalloyed structural steels | ≤ 0.17 | 19 | | [11373](/materials/csn/11373 "11373") | [1.0038](/materials/material-no/1.0038 "1.0038") | Unalloyed structural steels | ≤ 0.17 | 26 | | [11375](/materials/csn/11375 "11375") | [1.0038](/materials/material-no/1.0038 "1.0038") | Unalloyed structural steels | ≤ 0.17 | 26 | | [11375](/materials/csn/11375 "11375") | [1.0039](/materials/material-no/1.0039 "1.0039") | Unalloyed structural steels | ≤ 0.17 | 3 | | [11378](/materials/csn/11378 "11378") | [1.0114](/materials/material-no/1.0114 "1.0114") | Unalloyed structural steels | ≤ 0.17 | 21 | | [11378](/materials/csn/11378 "11378") | [1.0116](/materials/material-no/1.0116 "1.0116") | Unalloyed structural steels | ≤ 0.17 | 12 | | [11378](/materials/csn/11378 "11378") | [1.0038](/materials/material-no/1.0038 "1.0038") | Unalloyed structural steels | ≤ 0.17 | 26 | | [11378](/materials/csn/11378 "11378") | [1.0036](/materials/material-no/1.0036 "1.0036") | Unalloyed structural steels | ≤ 0.17 | 20 | | [11378](/materials/csn/11378 "11378") | [1.0036](/materials/material-no/1.0036 "1.0036") | Unalloyed structural steels | ≤ 0.17 | 19 | | [11378](/materials/csn/11378 "11378") | [1.0028](/materials/material-no/1.0028 "1.0028") | Unalloyed structural steels | ≤ 0.15 | 18 | | [11379](/materials/csn/11379 "11379") | [1.0167](/materials/material-no/1.0167 "1.0167") | Unalloyed structural steels | ≤ 0.17 | 4 | | [11416](/materials/csn/11416 "11416") | [1.0425](/materials/material-no/1.0425 "1.0425") | Heat-resistant structural steels | ≤ 0.2 | 20 | | [11416](/materials/csn/11416 "11416") | [1.0426](/materials/material-no/1.0426 "1.0426") | Aging resistant steels | 0.08–0.2 | 17 | | [11418](/materials/csn/11418 "11418") | [1.0425](/materials/material-no/1.0425 "1.0425") | Heat-resistant structural steels | ≤ 0.2 | 20 | | [11418](/materials/csn/11418 "11418") | [1.8945](/materials/material-no/1.8945 "1.8945") | Weathering steels | ≤ 0.12 | 16 | | [11419](/materials/csn/11419 "11419") | [1.0437](/materials/material-no/1.0437 "1.0437") | Others | ≤ 0.2 | 8 | | [11423](/materials/csn/11423 "11423") | [1.0040](/materials/material-no/1.0040 "1.0040") | Unalloyed structural steels | ≤ 0.25 | 8 | | [11423](/materials/csn/11423 "11423") | [1.0144](/materials/material-no/1.0144 "1.0144") | Unalloyed structural steels | ≤ 0.18 | 22 | | [11423](/materials/csn/11423 "11423") | [1.0044](/materials/material-no/1.0044 "1.0044") | Unalloyed structural steels | ≤ 0.21 | 26 | | [11425](/materials/csn/11425 "11425") | [1.0044](/materials/material-no/1.0044 "1.0044") | Unalloyed structural steels | ≤ 0.21 | 26 | | [11425](/materials/csn/11425 "11425") | [1.0042](/materials/material-no/1.0042 "1.0042") | Unalloyed structural steels | ≤ 0.23 | 3 | | [11428](/materials/csn/11428 "11428") | [1.0144](/materials/material-no/1.0144 "1.0144") | Unalloyed structural steels | ≤ 0.18 | 22 | | [11428](/materials/csn/11428 "11428") | [1.0136](/materials/material-no/1.0136 "1.0136") | Unalloyed structural steels | ≤ 0.23 | 1 | | [11431](/materials/csn/11431 "11431") | [1.0426](/materials/material-no/1.0426 "1.0426") | Aging resistant steels | 0.08–0.2 | 17 | | [11438](/materials/csn/11438 "11438") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 22 | | [11438](/materials/csn/11438 "11438") | [1.0570](/materials/material-no/1.0570 "1.0570") | Unalloyed structural steels | ≤ 0.2 | 20 | | [11443](/materials/csn/11443 "11443") | [1.0044](/materials/material-no/1.0044 "1.0044") | Unalloyed structural steels | ≤ 0.21 | 26 | **This grade’s own name** — recorded in our sources as this grade’s own designation under that standard. **Indicative** — taken from a published cross-reference table; a close match, not a guarantee of interchangeability. Verify against the mill certificate before ordering. **Withdrawn** — designation no longer current — a separate column from the two above, so a name can be same grade and withdrawn at once. [Previous](/materials/csn "Previous") Page 2 of 13[Next](/materials/csn/page/3 "Next")